We've upgraded our Mastodon server to v5.0.0-beta.1+mementomods-2026-11-07. That is 453 new commits from upstream since our October, 11.10.2026 build.

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🧭 Mastodon 5 is here

This is the big one! Mastodon's new 5.0 design is now live on our server, together with a rebuilt Mastodon Bird UI. Mastodon 5 is officially in beta, but it is what Mastodon itself is working on, and everything our server had before came along. We basically cherry-picked all our fork changed on top of fresh Mastodon v5 nightly version.

Things look familiar, but almost every view changed under the hood, so please tell us if something looks or works wrong. A lot has changed.

🚀 New in Mastodon 5

- A new design for the whole web interface: navigation, posts, column headers and menus
- A new composer that opens over the timeline (the core has it in bottom, ours is on the top)
- A conversation view for threads
- Posts show both a quote and attachments at the same time
- You can see the edit history of a post again
- Pick an accent colour for the interface in Preferences, Appearance
- Blocked accounts and blocked domains are on one page
- Admin and moderator links are in the main navigation
- Verified links use the colours of the site they point to

🔒 Security

- Support for verifying ML-DSA-44 HTTP message signatures, a post-quantum signature type (https://github.com/mastodon/mastodon/pull/41119).
- The Mastodon 4.7.5 security fixes we picked on 3.11.2026 are now part of the regular code.

🐦‍⬛ Mastodon Bird UI

Mastodon Bird UI is completely rewritten for Mastodon 5 as 5.0.0-beta.1-2026-11-07: https://github.com/rollecode/mastodon-bird-ui/releases/tag/5.0.0-beta.1-2026-11-07

- The familiar icons and heart from the old version are back.
- Reply, boost and like sit together on the left, bookmark and the menu on the right.
- Notifications look like they used to.
- The Ultra accessible and Ultra accessible Plus+ themes are also rewritten for v5, and Mastodon Bird UI follows the light, dark and high contrast settings as usual.

Themes are now: Mastodon Bird UI (the default), Mastodon, Mastodon Bird UI (Ultra accessible) and Mastodon Bird UI (Ultra accessible Plus+). You can change yours in Preferences, Appearance.

🏠 Changes specific to our server

Everything from our Mastodon 4 server came along:

- The For you feed
- Follow buttons on avatars
- The 10000 character limit, bigger polls, snow in December and the rest of the list at https://help.mementomori.social/mementomori.social/instance-features

New in this update:

- Boosting gives the boost icon a quick spin, and the numbers under posts roll when they change.
- You can hide the Translate button for languages you read: Preferences, Other, Translations. This replaces the old "hide Finnish translate links" and "hide all translate links" settings, so if you used those, please pick your languages again.
- The right sidebar shows trending hashtags and who to follow, also when you are logged out (I did not like it as empty)
- The For you feed is ported to Mastodon 5

Source code: https://github.com/mementomori-social/mastodon

As always, if you notice anything unusual or buggy, please reach out to me or any of the admins. Enjoy your time here, and feel free to message me with any questions or thoughts.

If anything feels off, please let us know!

#MementoMoriSocial #Mastodon #MastoAdmin #MastodonBirdUI #Mastodon5 #NewMastodon